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Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at $\sqrt{s_{NN}} =5.02$ TeV
Evidence for the light-by-light scattering process, γγ → γγ, in ultraperipheral PbPb collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is reported. The analysis is conducted using a data sample corresponding to an integrated luminosity of 390 μb −1 recorded by the CMS experiment at...
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| Lenguaje: | eng |
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SISSA
2019
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| Acceso en línea: | https://dx.doi.org/10.22323/1.352.0084 http://cds.cern.ch/record/2696133 |